@article{GDZPPN002212382, title = {Deformations of ruled mainfolds.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, volume = {468}, year = {1995}, pages = {213-218}, zbl = {0809.14028}, url = {http://dml.mathdoc.fr/item/GDZPPN002212382} }
Schmitt, Alexander. Deformations of ruled mainfolds.. Journal für die reine und angewandte Mathematik, Tome 468 (1995) pp. 213-218. http://gdmltest.u-ga.fr/item/GDZPPN002212382/